i can't figure it out and i need the answer quick.

f(x) ^-1 = 1/5 x

Step-by-step explanation:

f(x) = 5x

y =5x

To find the inverse, exchange x and y and solve for y

x =5y

Divide each side by 5

1/5x = 5y/5

1/5 x = y

1/5 x = f(x) ^-1

f(x) ^-1 = 1/5 x

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb